Multiform-curve rule.



PATBNTED SEPT l0, 1907.

G. M. HEALLEY. MULTIFDRM CURVE RULE.

APRLIOATION FILED FEB.6. 1907.

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. x I l PATENTED SEPT. l0, 1907.

G. M. HEALLEY. MULTIFORM CURVE RULE.

APPLIUATION FILED FEB.6,1907.

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GEORGE M. IIEALLEY, OF LA GROSSE, WISCONSIN.

MULTIFORM-CURVE RULE Specification of Letters Patent.

Patented Sept. 10, 1907.

Application filed February 6,1907. Serial No. 356,050.

To all whom t't may concern:

Be it known that I, GnonGn M. I'IEALLEY, a citizen of the United States,residing at'La Crosse, 'in the county of La Crosse and State ofWisconsin, have invented certain new and useful Improvements inMultil'orm-Curve Rules, of which the following is a specific-ationA Myinvention relates to improvements in what may be termed curve scribersand plotters. Its objects are to provide for producing or scribing anoutline of any required curvature, as in drafting or plotting', and tocarry out that end in a simple, expeditious and effective manner. Y

Said invention consists of certain structural features orinstrumentalities, substantially as hereinafter fully disclosed andspecifically pointed out by the claims.

In the accompanying drawing illustrating the preferred embodiment of myinvention-Figure l is aplan view thereof with the parts or membersassembled for practical use. Fig. 2 is a like view with said parts ormembers disassembled, the celluloid or steel spring strip member beingin its operative or edgewise position. Fig. 3 is a view showing thelatter member lying in a. flat detached position, and FigA 4 shows abroken side view and an edge view of the base or rule member, moreclearly disclosing its structural features.

In carrying out my invention, I suitably provide a preferablyrectangular member A which is preferably eighteen inches in length forconvenience in use as a rule. Said member is provided with series ofslots, one series B being arranged along, and opening out through onelongitudinal edge thereof and with the slots thereof terminating attheir inner ends in apertures or orifices made in said member, andnumbered from right to left l, 2, 3, 4, 5, 6, 7, S, 9, l0, ll, l2, andthe other series O the slots whereof terminating at their inner ends inapertures or orifices also made in said member and numbered from left toright lS, I4, l5, 1G, I7, IS, l), 20, 2l., 22, 23, 2l, 25, and openingout through the opposite longitudinal edge of the latter. 'lheright-hand end slot D of the slot-series B, is inclined toward said end;the next three of said series, as E, have a loss inclination in the samedirection;a fifth slot, as F, inclines in the opposite direction, at agreater angle; the two central slots, as G, are at rightangles to thelongitudinal axis of the member A, the next one to the left of thelatter', as H, is inclined to the right or in an opposite direction tothe slot I", the next one to II, as I, is also at right angles to theedge; while in the final three or group of said slots, as K, L, M, themiddle one is at right angles to the edge and the lateral ones areinclined in opposite directions to each other and toward said middleone, Of the slotseries (l, a number thereof, say six, as N, are inclinedalternately in opposite directions with relation to each other, one, asO, is at right angles to the edge; one, as l), is inclined to the right;one, as Q, is at right angles to the edge, two, as R, S, are oppositelyinclined to each other; one, as T, is at right angles to the edge, andone, at the extreme right-hand end of the series O, as U, is inclined tothe right.

I also provide for use in connection with the member A, what may betermed a blade V, preferably of Celluloid or a strip of spring steel,about twelve inches in length, which may have its ends slightly curvedor bent as at a, preferably as last noted for greater efiiciency for theretention thereof in operative position in the slots aforesaid intowhich its ends are inserted as presently described, especially in slotsconsiderably removed from each other. Said blade-member is suitablygraduated to indicate inches and fractions thereof upon the same, asshown, the purpose of which will be readily appreciated in the practicalapplication of the device. i Said blade-member is suitably equipped uponits relatively inner side with what may be designated as finger-pins bfor conveniently applying the fingers in effecting the retention of saidblade-member in place, as against fiexing as the pencil is passed incontact therewith and guided in scribing a curvature or outline as willbe readily appreciated. The various numerals used herein especially uponthe member A may be substituted by letters, or other form of eX-.

ponents desired, and said member may have scribed thereon other suitableindicia as may be found desirable in the use of the same.

As an example of the use of this device, it is noted that the member A,having the blade V adjusted in any two of the slots thereof, as forinstance in producing the semi-egg-shaped outline or curvature shown inthe drawing, the device is disposed with the first named member flatupon the paper or surface, the member V, of course, resting or beingpresented edgewise thereto. The requisite tracing or reproduction ofsaid outline as suggested by said blade-member may now be effected bythe requisite passing of the pencil or other marking medium conformablywith the latter along or upon said paper or surface, a hand resting uponand holding the member A in place and the Fingers being applied to thefinger-pins b for the steadying or xing in place the Celluloid or steelmember V as above noted. It is further observed that any other of thenumerous outlines or curves, as `may be found requisite, as in draftingand like work, may be reproduced by effecting the requisite adjustmentbetween the sundry slots of said member A and the flexible blade-memberV, as, in use, the device will readily suggest, and it is thereforethought it will not require further elaboration herein regarding thesame.

The device as described and disclosed by the drawing is exceedinglysimple, inexpensive and readily applied, as is apparent.

I Claim- 1. A device of the character described, comprising a memberhaving sundry slots in its longitudinal edges 0pening into apertures ororifices in said members and a flexible member having bent or curvedends for effective retention in said apertures and slots.

2.' A device of the character described, comprising a 10 member equippedn its longitudinal edges with inclined and perpendicular slots, and aflexible blade-member adapted for insertion at its ends into said slots,

In testimony whereof I affix my signature, in presence of two Witnesses.

GEO. M. HEALLEY.

Witnesses JOHN F. DOHERTY, MAY ONnin.

